Pull request for efi-2023-04-rc2

Documentation:

* Provide page with links to talks on U-Boot

UEFI:

* Enable CTRL+S to save the boot order in eficonfig command
* Run attribute check for QueryVariableInfo() only for the file store
* Bug fixes

Others:

* Improve output formatting of the coninfo command

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On the sandbox called without "--terminal raw" CTRL+C leaves U-Boot,
"ESC/CTRL+C to quit" is misleading.

Let's remove CTRL+C to quit key handling from bootmenu and eficonfig menu.

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

This converts 2 usages of this option to the non-SPL form, since there is
no SPL_CMD_EFICONFIG defined in Kconfig

Signed-off-by: Simon Glass <sjg@chromium.org>

Avoid duplicating some of the escape-sequence processing here and use the
CLI function instead.

Signed-off-by: Simon Glass <sjg@chromium.org>

Use the return value to save having to pass around a pointer. This also
resolves any ambiguity about what *key contains when the function is
called.

Signed-off-by: Simon Glass <sjg@chromium.org>

Use the return value to save having to pass around a pointer. This also
resolves any ambiguity about what *key contains when the function is
called.

Signed-off-by: Simon Glass <sjg@chromium.org>

This enum values conflict with linux/input.h so rename them.

Signed-off-by: Simon Glass <sjg@chromium.org>

Perform a simple rename of CONFIG_POSTBOOTMENU to CFG_POSTBOOTMENU

Signed-off-by: Tom Rini <trini@konsulko.com>

UEFI specification requires booting from removal media using
a architecture-specific default image name such as BOOTAA64.EFI.
This commit adds the removable media entries into bootmenu,
so that user can select the removable media and boot with
default image.

The bootmenu automatically enumerates the possible bootable
media devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL,
add it as new UEFI boot option(BOOT####) and update BootOrder
variable. This automatically generated UEFI boot option
has the dedicated guid in the optional_data to distinguish it from
the UEFI boot option user adds manually. This optional_data is
removed when the efi bootmgr loads the selected UEFI boot option.

This commit also provides the BOOT#### variable maintenance feature.
Depending on the system hardware setup, some devices
may not exist at a later system boot, so bootmenu checks the
available device in each bootmenu invocation and automatically
removes the BOOT#### variable corrensponding to the non-existent
media device.

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>

The commit a3d0aa87acbe ("bootmenu: update bootmenu_entry structure")
changes the bootmenu title type from char to u16(UTF16 string)
to support EFI based system. If EFI_LOADER is not enabled,
printf("%ls") is not supported, so bootmenu does not appear
correctly.

This commit changes the type of menu title from u16(UTF16) to
utf-8 string and EFI strings is conveted into utf-8.

Fixes: a3d0aa87acbe ("bootmenu: update bootmenu_entry structure")
Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Tested-by: Pali Rohar <pali@kernel.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>